Wilderness Lake is a beautiful tree lined lake and is totally Private Lake so do not try to access it. This lake is popular with water foul due to all the wetlands that surround this lake. Wilderness Lake is different than the near by Trout and Lost Lakes as their shorelines are fairly dry and rocky during the summer whereas this lake is very marshy and muddy along its shore. This lake is 150 acre and is 15 feet at its deepest. There is several homes near it's shores. The main private access point to this lake is at the south end of the lake. There are no docks on this lake. This lake is in Northeastern part of Pend Oreille County, Washington. Its West of Horseshoe Lake and Lost Lake and North of the Trout Lake.